Screening apparatus.



Joimjzflig zak By ,4 ITO/2N5 Y8 Patented Dec 21,1909

J. H. LYNCH.

SCREENING-APPARATUS.

APPLIOATIOh FILED MAR 9 1909 WITNESSES J9EE" H. LYNGIEE, OI" HAVERSTEAW, NEW YORK.

3CREENING AFPARATU'S.

Specification of Letters Pat nt Pitt ":31 tttl D00. 21, Hitiii.

Serial No. 482,362.

Application filed March 9, 1909.

will travel down the same and either through the meshes thercot' or oft the lower ours in. connected together at their upper To all whom it may concern:

Be. it known that I, Join H. Lumen, a citizen of the United States, and a resident. of Hayerstraw, in the county ot lioeliland 1 I and State of New York, hare invented a new i and lower ends. respectively. hy floor hairs and Improved Screening Apparatus. or i If) and 20. Extending across from one side which the following is a full, clear. and oar to the. other. are mpluraliiy ol rods 2i exact description. in the plane ol the floor hars 15) and 20, and

This invent on relates to certain improre- I arrnngrd parallel to each other and parallel ments in screening apparatus. and more parto the upper and lower cuds ol the screen. ticularly to an apparatus designed for fr second set. of rods 22 extends longitudiscreening sand. gravel, coal. or the like. nally ot the screen and :t'roni the. upper floor into two different grades and deliveriugeach in 5) to the lower lloor har 20, and each t {1 a ate car or receiver. rod 32 is wrapped once around each trans- The apparatus is designed to he so inount- V se rod 21, as clearly shown in Fig. '3- ed that cars may he run along separate The transverse rods 21 all he beneath the tracks beneath the apparatus, and as soon as g e p ane of he rods 22, and art not fined replaced by e npty npg upon the Su ng Ullly 51S SllpPOl'iS l OI tilt. ltlt itdlltllilllillTtl ltltlh tracks.

The invention consists in the combination of parts hereinafter descrihedfand more particularly pointed out in the claims.

Reference is to be had to the acco1upany ing drawings, forming a part of this specification, in which similar characters o't" reterence indicate corresponding parts in all the figures, and in which- I V Figure 1 is a vertical section through an apparatus constructed in accordance with my invention; Fig.-2 a top plan view thereof; and Fig. 3 is an enlarged detail showing the construction of the screen proper.

It is, of course, understood that my ill1- proyed screening apparatus may he construeted of any size desired, and may he used for screening any desired material. hut the ')articular t'orni illustrated is especially dc signed for screening coal, sand or gravel, and delivering the dill'erent products to slots hetween the rods 22 into short sections. l lacli rod 22 as it extends 'around each trans verse rod, operates not only to hold the rods together and in preilelcrniined relationship. but also constitutes a spacer for defining the minimum distance between ad iccnt rods 22. The rods 22 may he of any diameter desired and the rods 21 may he spaced apart to any extent dcsiredpl'or it is evident. that the size and position of these rods detine the size ot the apertures in the screen. The upper and lower ends ot the rods :22 may he eonccahul and protected in any suitable manner. hut, as shown. I provide sheet metal plates 23 upon the upper surfaces ol the lloor hars 19 and ill. and covering the ends ol the rods 22. The material to he separated is dumped on to the upper end of the 'l'een from any suilahle i'oriu o l? platform 34-, and the liner particles pass through the apertures hetwecu the rods ot the screen. while the coarser pan separate cars. in this construction. I t?ll] W till? lm Ol Ploy two mflmm] fnwks n m d 11 V screen and drop 'ljroni the lowcucud lhcreol'. 11. arranged parallel and adapted for su 5 For directing into a car or receiver. the |naporting and transporting suitahle cars 12 t lcrial which parses through the meshes of and 13. "ietwecn the tracks are arranged the screen, l provide two hnllles or troughs two uprights 14-, 14'. and op 'iositedo these morahle relatively to each other and thou and at one gide f the tym-k 10 :1 second ti i\l)lt lll IOFPOtfti ll) tilt SCIPUH. ()llt (if tlltH pair of uprights l5, 15. The two uprights hatllcs or troughs is hinged to the screen 15, 15 are connected by a transverse ineniher :uljaccnt the upper end thereof. and prefer- 16 at a suitahle eleyation above the cur tops. 1 ahly to the under side of the upper floor har and the uprights '14, ll are connected by a 19 and extends downwm'dtv beneath the transverse uuuuhcr 17 at a much lower rlescreen and at an angle, thereto. The. hatlle ration. My improved screen is supported or trough is slightly wider than the screen upon these transverse ineinhcrs l6 and 17, l and is provided with side. flanges so for enand is set at an inclination so that ii'iaterial I gagementwith the outer sides ot the side. placed upon the upper end of the screen i walls 18 of the screen. The second battle or The creen includes two side plates or' hutalso act to suhdiride the lougitudiuat trough 2? is hinged to the screen at the l and spread out at their lower ends to a width lower end and preferably to the lower side f of the floor bar 20. This halite normally extends downwardly and outwardly atan angle to the screen, and at approximately right angles to the ballle or trough This i or. over 36, the upper end of whic battle is also pr vioed with side bars 28, which come adjacent the outer sides L8 or the screen when said bai'lle is mo ed upwardly to its limiting position. The free ends of the two ballles are supported so that a movementof one. results in 0. correspondsuhstantially equal to the width of the car. side bars are connected a top plate a short zjlistance ahovc the top of t. and the lower ei of which terminates acijacent the upper 3 of the car. rial passing ott r nd 0t sc 1' a 11 0 1 r c Lotti u ant M wean tie comes beneath l side walls 35, and 1 compelled to enter the car 13. its previously stated-the lower end ing moven'ient of the other, and whereby the two ballles ma v come to an equilibrium or balance earn other. secured to the sides of the upper battle 25,

and thence upwardly over pulleys or sheaves I is connected to the lower end of the hood,

30 on the sides of the screen, thence downwardly about pulleys or sheaves 231 on the Preferably a cord 29 is oi. this hood or shield preferahly rests upon the car, and in order to support it out of engagement with the car to permit the re moral of the latter and the placing of a second and cinptv car, a cord or rope 37 is preferably provided. the lower end of which and the upper end of which eritends over sides of the lower battle, and then upwardly 1 to a rin or other fastcnin means 32 on I pulling on the rope 51, a. person on the platthe upright 1-1. This rope arrangement is preferably duplicated upon opposite sides.

of the screen. as is illustrated in Fig. 2. supporting the free ends of the two bullies 1n the above manner, 1t will be noted that a By l downward movement of the lower end of 1 the upper batlle will tighten the cord or rope, so as to draw upwardly the lower end of the and slides otl' the free or lower aortionj lllatcrialpassmg through thelowcr to the screen. a second battle pivotally seportion of the screen comes directly on to thereof.

the lower battle, and the two baillcs will come 3 substantially that shown in Fig. 1, the ma- 1 is accompanied by a correspondlng upwardthe center of the car 12, so as to ctl'cctual-ly other.

port intermediate the ends ot the cord,

load the latter and prevent the niateriali from becoming scattered on the ground about the car.

In dealing: with different kinds of material, it may be necessary to vary the eitectivc 3 to the screen, 21 SOCO bflfi'le p l v pulleys 3S mull-l9 on the uprigl ts to a "fastening device 450 ad acent the platform. By

torin may aise the hood to inoperative position. The hood, if desired, may be provided with outwawily-extending handles it at its lower end. by means of: which a person on the ground may easily raise the hood.

Having thus described my invention, .11 claim as new and desire to secure by Letters 3atcnt:

1. ln COHIblTIGl'lOD, an inclined screen,'a battle pivotally secured adjacent the under 5 side of the upper end of the screen. and e1 ztending downwardly therefrom at an angle end of said screen and extending toward the other ballle, and a cord connecting the free ends of said bullies and movable over a supwhereby a downward movement of one battle movement of the other battle.

2. In CO1l1l)lI 1tltl01l, FtI1 incl ned screen, a batlic tnvotally secured HCljFlCQlltthe under 1 side of the upper end of the screen and exlcngth of the ropes Q9, and this may he done in any suitable manner. plurality of rings 32 may be provided in the For instance, a?

uprights 14 and each rope may have a 11001: 1

for entering in one of these rings. p

The material which does not pass through the screen should be directed into a second car 13, and in order to prevent this material 1 from becoming scattered and to insure the shield preferably comprises side plates pivoted to the side plates 12% oi the screen tending downwardly therefrom at an angle cured adjacent the under side of the lower other battle. and a cord having one end 0011- nccted to the first-mentioned baffle and extending over a pulley on the side or the screen and over a second pulley on the end of the second battle and having its other end adjustablv supported.

in testimony whereol I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN H. LYNCH.

K'VllIIBSS-BS MARK OBnIE-N. 

